./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:45:41,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:45:42,055 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:45:42,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:45:42,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:45:42,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:45:42,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:45:42,097 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:45:42,097 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:45:42,097 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:45:42,098 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:45:42,098 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:45:42,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:45:42,098 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:45:42,099 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:45:42,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:45:42,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:45:42,099 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:45:42,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:45:42,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:45:42,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:45:42,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:45:42,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:45:42,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:45:42,101 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:45:42,101 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:45:42,101 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:45:42,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:45:42,101 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:45:42,101 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:45:42,102 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:45:42,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:45:42,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:45:42,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:45:42,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:42,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:45:42,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:45:42,103 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:45:42,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:45:42,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:42,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:45:42,104 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:45:42,104 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:45:42,104 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:45:42,104 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:45:42,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:45:42,105 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:45:42,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:45:42,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:45:42,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:45:42,105 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b29a4c23931df07495caab7fd70ec22fec28fcea21b47e1c8eb19fb44a778d8 [2024-11-28 04:45:42,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:45:42,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:45:42,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:45:42,450 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:45:42,451 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:45:42,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-11-28 04:45:45,723 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/data/b4ef2d16a/4b6d5ad314db4d85967dfbc756e2aff9/FLAG952355bd6 [2024-11-28 04:45:46,090 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:45:46,091 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/sv-benchmarks/c/weaver/popl20-two-queue.wvr.c [2024-11-28 04:45:46,117 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/data/b4ef2d16a/4b6d5ad314db4d85967dfbc756e2aff9/FLAG952355bd6 [2024-11-28 04:45:46,171 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/data/b4ef2d16a/4b6d5ad314db4d85967dfbc756e2aff9 [2024-11-28 04:45:46,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:45:46,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:45:46,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:45:46,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:45:46,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:45:46,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a8f5ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46, skipping insertion in model container [2024-11-28 04:45:46,201 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,231 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:45:46,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:45:46,481 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:45:46,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:45:46,555 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:45:46,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46 WrapperNode [2024-11-28 04:45:46,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:45:46,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:45:46,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:45:46,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:45:46,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,605 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 212 [2024-11-28 04:45:46,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:45:46,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:45:46,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:45:46,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:45:46,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,621 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,648 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-28 04:45:46,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,664 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,679 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,680 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:45:46,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:45:46,684 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:45:46,684 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:45:46,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (1/1) ... [2024-11-28 04:45:46,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:46,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:46,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:45:46,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:45:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:45:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:45:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:45:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:45:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:45:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:45:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:45:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:45:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:45:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:45:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:45:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:45:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:45:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:45:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:45:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:45:46,785 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:45:46,945 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:45:46,949 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:45:47,603 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:45:47,603 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:45:48,021 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:45:48,021 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 04:45:48,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:45:48 BoogieIcfgContainer [2024-11-28 04:45:48,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:45:48,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:45:48,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:45:48,030 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:45:48,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:45:46" (1/3) ... [2024-11-28 04:45:48,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9f0ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:45:48, skipping insertion in model container [2024-11-28 04:45:48,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:46" (2/3) ... [2024-11-28 04:45:48,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9f0ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:45:48, skipping insertion in model container [2024-11-28 04:45:48,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:45:48" (3/3) ... [2024-11-28 04:45:48,035 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-two-queue.wvr.c [2024-11-28 04:45:48,057 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:45:48,059 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-two-queue.wvr.c that has 3 procedures, 47 locations, 1 initial locations, 4 loop locations, and 16 error locations. [2024-11-28 04:45:48,060 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:45:48,153 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 04:45:48,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 50 transitions, 114 flow [2024-11-28 04:45:48,257 INFO L124 PetriNetUnfolderBase]: 4/48 cut-off events. [2024-11-28 04:45:48,262 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:45:48,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 48 events. 4/48 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 123 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-28 04:45:48,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 50 transitions, 114 flow [2024-11-28 04:45:48,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 46 transitions, 101 flow [2024-11-28 04:45:48,291 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:45:48,310 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4879b207, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:45:48,311 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-28 04:45:48,318 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:45:48,319 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 04:45:48,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:45:48,319 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:48,320 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:45:48,320 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:45:48,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:48,326 INFO L85 PathProgramCache]: Analyzing trace with hash 670196, now seen corresponding path program 1 times [2024-11-28 04:45:48,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:48,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706721538] [2024-11-28 04:45:48,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:48,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:48,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:48,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706721538] [2024-11-28 04:45:48,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706721538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:48,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:48,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:45:48,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195554931] [2024-11-28 04:45:48,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:48,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:48,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:48,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:48,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:48,713 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:45:48,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:48,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:48,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:45:48,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:49,081 INFO L124 PetriNetUnfolderBase]: 215/476 cut-off events. [2024-11-28 04:45:49,082 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 04:45:49,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 476 events. 215/476 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2482 event pairs, 128 based on Foata normal form. 2/350 useless extension candidates. Maximal degree in co-relation 755. Up to 338 conditions per place. [2024-11-28 04:45:49,088 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 27 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2024-11-28 04:45:49,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 173 flow [2024-11-28 04:45:49,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:45:49,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-28 04:45:49,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53 [2024-11-28 04:45:49,109 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 101 flow. Second operand 4 states and 106 transitions. [2024-11-28 04:45:49,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 173 flow [2024-11-28 04:45:49,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:45:49,123 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 148 flow [2024-11-28 04:45:49,126 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2024-11-28 04:45:49,133 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2024-11-28 04:45:49,134 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 148 flow [2024-11-28 04:45:49,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:49,135 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:49,135 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 04:45:49,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:45:49,136 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:45:49,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:49,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1508371663, now seen corresponding path program 1 times [2024-11-28 04:45:49,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:49,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120643654] [2024-11-28 04:45:49,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:49,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:49,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:49,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120643654] [2024-11-28 04:45:49,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120643654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:49,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154228494] [2024-11-28 04:45:49,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:49,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:49,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:49,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:49,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:45:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:49,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:45:49,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:49,620 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:49,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154228494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:49,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:49,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:45:49,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097636773] [2024-11-28 04:45:49,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:49,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:45:49,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:49,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:45:49,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:45:49,665 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:45:49,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:49,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:49,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:45:49,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:49,955 INFO L124 PetriNetUnfolderBase]: 215/474 cut-off events. [2024-11-28 04:45:49,955 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-28 04:45:49,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 474 events. 215/474 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2474 event pairs, 128 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 806. Up to 328 conditions per place. [2024-11-28 04:45:49,964 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 20 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2024-11-28 04:45:49,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 204 flow [2024-11-28 04:45:49,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:45:49,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:45:49,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-11-28 04:45:49,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-28 04:45:49,968 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 148 flow. Second operand 6 states and 130 transitions. [2024-11-28 04:45:49,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 204 flow [2024-11-28 04:45:49,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 46 transitions, 204 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:45:49,971 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 164 flow [2024-11-28 04:45:49,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-11-28 04:45:49,972 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2024-11-28 04:45:49,972 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 164 flow [2024-11-28 04:45:49,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:49,972 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:49,973 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:49,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:45:50,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:50,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:45:50,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:50,178 INFO L85 PathProgramCache]: Analyzing trace with hash 528052680, now seen corresponding path program 1 times [2024-11-28 04:45:50,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:50,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970894068] [2024-11-28 04:45:50,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:50,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:50,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:50,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:50,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970894068] [2024-11-28 04:45:50,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970894068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:50,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:50,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:45:50,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487481808] [2024-11-28 04:45:50,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:50,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:50,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:50,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:50,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:50,477 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-28 04:45:50,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:50,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:50,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-28 04:45:50,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:50,729 INFO L124 PetriNetUnfolderBase]: 232/522 cut-off events. [2024-11-28 04:45:50,729 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-28 04:45:50,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 522 events. 232/522 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2774 event pairs, 146 based on Foata normal form. 14/406 useless extension candidates. Maximal degree in co-relation 810. Up to 335 conditions per place. [2024-11-28 04:45:50,737 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 33 selfloop transitions, 4 changer transitions 2/55 dead transitions. [2024-11-28 04:45:50,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 55 transitions, 264 flow [2024-11-28 04:45:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:45:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-28 04:45:50,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-28 04:45:50,742 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 164 flow. Second operand 4 states and 120 transitions. [2024-11-28 04:45:50,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 55 transitions, 264 flow [2024-11-28 04:45:50,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 236 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-28 04:45:50,747 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 153 flow [2024-11-28 04:45:50,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-11-28 04:45:50,749 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2024-11-28 04:45:50,750 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 153 flow [2024-11-28 04:45:50,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:50,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:50,751 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-28 04:45:50,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:45:50,751 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:45:50,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash 485119363, now seen corresponding path program 1 times [2024-11-28 04:45:50,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:50,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936950802] [2024-11-28 04:45:50,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:50,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:50,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936950802] [2024-11-28 04:45:50,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936950802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:50,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95536891] [2024-11-28 04:45:50,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:50,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:50,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:50,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:50,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:45:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:50,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:45:50,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:51,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:51,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95536891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:51,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:51,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-28 04:45:51,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213377602] [2024-11-28 04:45:51,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:51,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:45:51,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:51,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:45:51,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:45:51,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:45:51,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 153 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:51,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:51,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:45:51,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:51,581 INFO L124 PetriNetUnfolderBase]: 238/546 cut-off events. [2024-11-28 04:45:51,581 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-28 04:45:51,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 546 events. 238/546 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2952 event pairs, 146 based on Foata normal form. 6/419 useless extension candidates. Maximal degree in co-relation 928. Up to 381 conditions per place. [2024-11-28 04:45:51,588 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 25 selfloop transitions, 25 changer transitions 0/64 dead transitions. [2024-11-28 04:45:51,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 343 flow [2024-11-28 04:45:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:45:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 04:45:51,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2024-11-28 04:45:51,591 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.432 [2024-11-28 04:45:51,591 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 153 flow. Second operand 10 states and 216 transitions. [2024-11-28 04:45:51,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 343 flow [2024-11-28 04:45:51,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 337 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:45:51,599 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 321 flow [2024-11-28 04:45:51,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=321, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-11-28 04:45:51,603 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-11-28 04:45:51,604 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 321 flow [2024-11-28 04:45:51,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:51,604 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:51,604 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:51,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:45:51,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:51,805 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:45:51,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:51,805 INFO L85 PathProgramCache]: Analyzing trace with hash 638632743, now seen corresponding path program 1 times [2024-11-28 04:45:51,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:51,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450886011] [2024-11-28 04:45:51,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:51,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:51,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:51,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450886011] [2024-11-28 04:45:51,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450886011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:51,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:51,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:45:51,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763013753] [2024-11-28 04:45:51,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:51,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:51,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:51,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:51,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:51,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-28 04:45:51,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:51,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:51,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-28 04:45:51,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:52,261 INFO L124 PetriNetUnfolderBase]: 269/651 cut-off events. [2024-11-28 04:45:52,261 INFO L125 PetriNetUnfolderBase]: For 164/164 co-relation queries the response was YES. [2024-11-28 04:45:52,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1405 conditions, 651 events. 269/651 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3682 event pairs, 174 based on Foata normal form. 14/526 useless extension candidates. Maximal degree in co-relation 1307. Up to 396 conditions per place. [2024-11-28 04:45:52,266 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 64 selfloop transitions, 4 changer transitions 4/88 dead transitions. [2024-11-28 04:45:52,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 88 transitions, 598 flow [2024-11-28 04:45:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:45:52,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:45:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-28 04:45:52,269 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.584 [2024-11-28 04:45:52,269 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 321 flow. Second operand 5 states and 146 transitions. [2024-11-28 04:45:52,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 88 transitions, 598 flow [2024-11-28 04:45:52,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 564 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-28 04:45:52,275 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 328 flow [2024-11-28 04:45:52,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-11-28 04:45:52,276 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 16 predicate places. [2024-11-28 04:45:52,276 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 328 flow [2024-11-28 04:45:52,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:52,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:52,277 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:52,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:45:52,277 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:45:52,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:52,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1844856340, now seen corresponding path program 1 times [2024-11-28 04:45:52,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:52,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30142929] [2024-11-28 04:45:52,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:52,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:52,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:52,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30142929] [2024-11-28 04:45:52,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30142929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:52,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986999828] [2024-11-28 04:45:52,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:52,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:52,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:52,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:52,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:45:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:52,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:45:52,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:45:52,693 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:52,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986999828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:52,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:52,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2024-11-28 04:45:52,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73207072] [2024-11-28 04:45:52,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:52,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:52,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:52,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:52,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:52,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-28 04:45:52,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:52,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:52,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-28 04:45:52,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:52,870 INFO L124 PetriNetUnfolderBase]: 196/510 cut-off events. [2024-11-28 04:45:52,870 INFO L125 PetriNetUnfolderBase]: For 172/180 co-relation queries the response was YES. [2024-11-28 04:45:52,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 510 events. 196/510 cut-off events. For 172/180 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2767 event pairs, 124 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 1052. Up to 359 conditions per place. [2024-11-28 04:45:52,875 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 46 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2024-11-28 04:45:52,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 414 flow [2024-11-28 04:45:52,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:52,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:45:52,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-28 04:45:52,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-28 04:45:52,877 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 328 flow. Second operand 3 states and 84 transitions. [2024-11-28 04:45:52,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 414 flow [2024-11-28 04:45:52,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 401 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 04:45:52,887 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 309 flow [2024-11-28 04:45:52,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-11-28 04:45:52,888 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2024-11-28 04:45:52,890 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 309 flow [2024-11-28 04:45:52,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:52,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:52,890 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:52,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:45:53,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:53,091 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:45:53,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:53,096 INFO L85 PathProgramCache]: Analyzing trace with hash 292813476, now seen corresponding path program 1 times [2024-11-28 04:45:53,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:53,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036612500] [2024-11-28 04:45:53,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:53,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:53,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:53,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:53,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036612500] [2024-11-28 04:45:53,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036612500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:53,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718858668] [2024-11-28 04:45:53,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:53,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:53,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:53,380 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:53,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:45:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:53,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:45:53,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:45:53,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:45:53,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718858668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:53,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:45:53,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-28 04:45:53,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353740088] [2024-11-28 04:45:53,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:53,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:53,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:53,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:53,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:53,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-28 04:45:53,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:53,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:53,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-28 04:45:53,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:53,638 INFO L124 PetriNetUnfolderBase]: 142/406 cut-off events. [2024-11-28 04:45:53,638 INFO L125 PetriNetUnfolderBase]: For 150/153 co-relation queries the response was YES. [2024-11-28 04:45:53,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 406 events. 142/406 cut-off events. For 150/153 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2110 event pairs, 88 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 884. Up to 275 conditions per place. [2024-11-28 04:45:53,641 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 43 selfloop transitions, 1 changer transitions 1/61 dead transitions. [2024-11-28 04:45:53,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 391 flow [2024-11-28 04:45:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:45:53,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-28 04:45:53,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-11-28 04:45:53,643 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 309 flow. Second operand 3 states and 82 transitions. [2024-11-28 04:45:53,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 391 flow [2024-11-28 04:45:53,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:45:53,647 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 293 flow [2024-11-28 04:45:53,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2024-11-28 04:45:53,648 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2024-11-28 04:45:53,648 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 293 flow [2024-11-28 04:45:53,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:53,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:53,649 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:53,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:45:53,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:45:53,853 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:45:53,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:53,853 INFO L85 PathProgramCache]: Analyzing trace with hash 699826368, now seen corresponding path program 1 times [2024-11-28 04:45:53,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:53,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763817376] [2024-11-28 04:45:53,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:53,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:45:53,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:53,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763817376] [2024-11-28 04:45:53,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763817376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:53,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:53,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:45:53,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866980695] [2024-11-28 04:45:53,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:53,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:53,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:53,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:53,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:45:53,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-28 04:45:53,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:53,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:53,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-28 04:45:53,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:54,082 INFO L124 PetriNetUnfolderBase]: 119/334 cut-off events. [2024-11-28 04:45:54,082 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-11-28 04:45:54,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 334 events. 119/334 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1557 event pairs, 40 based on Foata normal form. 6/315 useless extension candidates. Maximal degree in co-relation 751. Up to 124 conditions per place. [2024-11-28 04:45:54,086 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 47 selfloop transitions, 2 changer transitions 1/66 dead transitions. [2024-11-28 04:45:54,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 66 transitions, 410 flow [2024-11-28 04:45:54,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:45:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-28 04:45:54,089 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-28 04:45:54,090 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 293 flow. Second operand 3 states and 87 transitions. [2024-11-28 04:45:54,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 66 transitions, 410 flow [2024-11-28 04:45:54,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:45:54,095 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 306 flow [2024-11-28 04:45:54,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-11-28 04:45:54,096 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 14 predicate places. [2024-11-28 04:45:54,096 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 306 flow [2024-11-28 04:45:54,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:54,096 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:54,096 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-28 04:45:54,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:45:54,097 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:45:54,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:54,097 INFO L85 PathProgramCache]: Analyzing trace with hash -90951328, now seen corresponding path program 2 times [2024-11-28 04:45:54,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:54,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943065188] [2024-11-28 04:45:54,100 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:45:54,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:54,120 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:45:54,120 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:45:54,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:54,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943065188] [2024-11-28 04:45:54,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943065188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:54,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131380144] [2024-11-28 04:45:54,173 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:45:54,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:54,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:54,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:54,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:45:54,262 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:45:54,263 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:54,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:45:54,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:45:54,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:45:54,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131380144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:54,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:54,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-28 04:45:54,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295374297] [2024-11-28 04:45:54,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:54,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:54,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:54,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:54,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:54,371 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:45:54,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:54,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:54,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:45:54,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:54,470 INFO L124 PetriNetUnfolderBase]: 119/343 cut-off events. [2024-11-28 04:45:54,471 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-11-28 04:45:54,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 343 events. 119/343 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1611 event pairs, 80 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 791. Up to 227 conditions per place. [2024-11-28 04:45:54,473 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 30 selfloop transitions, 16 changer transitions 0/60 dead transitions. [2024-11-28 04:45:54,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 388 flow [2024-11-28 04:45:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:45:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-11-28 04:45:54,474 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-11-28 04:45:54,474 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 306 flow. Second operand 4 states and 86 transitions. [2024-11-28 04:45:54,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 388 flow [2024-11-28 04:45:54,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 382 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-28 04:45:54,477 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 322 flow [2024-11-28 04:45:54,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-11-28 04:45:54,478 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 15 predicate places. [2024-11-28 04:45:54,478 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 322 flow [2024-11-28 04:45:54,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:54,479 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:54,479 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-28 04:45:54,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:45:54,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:45:54,683 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:45:54,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:54,683 INFO L85 PathProgramCache]: Analyzing trace with hash -901128005, now seen corresponding path program 1 times [2024-11-28 04:45:54,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:54,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19830543] [2024-11-28 04:45:54,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:54,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:54,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:54,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19830543] [2024-11-28 04:45:54,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19830543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:54,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527530433] [2024-11-28 04:45:54,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:54,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:54,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:54,876 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:54,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:45:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:54,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:45:54,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:55,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:55,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527530433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:55,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:55,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-28 04:45:55,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474968035] [2024-11-28 04:45:55,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:55,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:45:55,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:55,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:45:55,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:45:55,286 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:45:55,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 322 flow. Second operand has 24 states, 24 states have (on average 17.083333333333332) internal successors, (410), 24 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:55,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:55,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:45:55,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:55,689 INFO L124 PetriNetUnfolderBase]: 137/415 cut-off events. [2024-11-28 04:45:55,689 INFO L125 PetriNetUnfolderBase]: For 427/427 co-relation queries the response was YES. [2024-11-28 04:45:55,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 415 events. 137/415 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1945 event pairs, 80 based on Foata normal form. 12/384 useless extension candidates. Maximal degree in co-relation 1038. Up to 223 conditions per place. [2024-11-28 04:45:55,693 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 21 selfloop transitions, 61 changer transitions 0/96 dead transitions. [2024-11-28 04:45:55,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 96 transitions, 756 flow [2024-11-28 04:45:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:45:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-28 04:45:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 438 transitions. [2024-11-28 04:45:55,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3981818181818182 [2024-11-28 04:45:55,695 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 322 flow. Second operand 22 states and 438 transitions. [2024-11-28 04:45:55,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 96 transitions, 756 flow [2024-11-28 04:45:55,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 96 transitions, 688 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:45:55,703 INFO L231 Difference]: Finished difference. Result has 88 places, 96 transitions, 692 flow [2024-11-28 04:45:55,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=692, PETRI_PLACES=88, PETRI_TRANSITIONS=96} [2024-11-28 04:45:55,705 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 39 predicate places. [2024-11-28 04:45:55,705 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 96 transitions, 692 flow [2024-11-28 04:45:55,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.083333333333332) internal successors, (410), 24 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:55,706 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:55,706 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:55,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:45:55,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:45:55,911 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:45:55,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:55,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1522844431, now seen corresponding path program 1 times [2024-11-28 04:45:55,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:55,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568092767] [2024-11-28 04:45:55,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:55,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:45:55,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:55,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568092767] [2024-11-28 04:45:55,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568092767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:55,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:55,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:45:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299129054] [2024-11-28 04:45:55,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:55,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:55,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:55,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:45:55,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-28 04:45:55,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 96 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:55,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:55,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-28 04:45:55,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:56,102 INFO L124 PetriNetUnfolderBase]: 119/365 cut-off events. [2024-11-28 04:45:56,102 INFO L125 PetriNetUnfolderBase]: For 454/454 co-relation queries the response was YES. [2024-11-28 04:45:56,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 365 events. 119/365 cut-off events. For 454/454 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1554 event pairs, 42 based on Foata normal form. 5/351 useless extension candidates. Maximal degree in co-relation 1048. Up to 152 conditions per place. [2024-11-28 04:45:56,105 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 84 selfloop transitions, 2 changer transitions 3/104 dead transitions. [2024-11-28 04:45:56,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 104 transitions, 895 flow [2024-11-28 04:45:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:45:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-28 04:45:56,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-11-28 04:45:56,107 INFO L175 Difference]: Start difference. First operand has 88 places, 96 transitions, 692 flow. Second operand 3 states and 89 transitions. [2024-11-28 04:45:56,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 104 transitions, 895 flow [2024-11-28 04:45:56,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 104 transitions, 739 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-11-28 04:45:56,138 INFO L231 Difference]: Finished difference. Result has 82 places, 97 transitions, 550 flow [2024-11-28 04:45:56,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=550, PETRI_PLACES=82, PETRI_TRANSITIONS=97} [2024-11-28 04:45:56,139 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 33 predicate places. [2024-11-28 04:45:56,139 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 97 transitions, 550 flow [2024-11-28 04:45:56,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:56,139 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:56,140 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:56,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:45:56,140 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:45:56,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1331164190, now seen corresponding path program 1 times [2024-11-28 04:45:56,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:56,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882044021] [2024-11-28 04:45:56,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:56,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:45:56,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:56,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882044021] [2024-11-28 04:45:56,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882044021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:56,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410143407] [2024-11-28 04:45:56,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:56,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:56,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:56,807 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:56,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:45:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:56,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:45:56,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:57,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:45:57,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:45:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:45:57,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:57,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-28 04:45:57,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:45:57,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 46 [2024-11-28 04:45:58,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:45:58,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410143407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:58,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:58,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-28 04:45:58,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540268111] [2024-11-28 04:45:58,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:58,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:45:58,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:58,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:45:58,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:45:58,998 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-28 04:45:58,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 97 transitions, 550 flow. Second operand has 26 states, 26 states have (on average 13.73076923076923) internal successors, (357), 26 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:58,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:58,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-28 04:45:58,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:02,182 INFO L124 PetriNetUnfolderBase]: 650/1386 cut-off events. [2024-11-28 04:46:02,182 INFO L125 PetriNetUnfolderBase]: For 802/802 co-relation queries the response was YES. [2024-11-28 04:46:02,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 1386 events. 650/1386 cut-off events. For 802/802 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7919 event pairs, 49 based on Foata normal form. 0/1293 useless extension candidates. Maximal degree in co-relation 3369. Up to 198 conditions per place. [2024-11-28 04:46:02,197 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 200 selfloop transitions, 113 changer transitions 8/331 dead transitions. [2024-11-28 04:46:02,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 331 transitions, 1905 flow [2024-11-28 04:46:02,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-28 04:46:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-28 04:46:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 839 transitions. [2024-11-28 04:46:02,207 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3570212765957447 [2024-11-28 04:46:02,207 INFO L175 Difference]: Start difference. First operand has 82 places, 97 transitions, 550 flow. Second operand 47 states and 839 transitions. [2024-11-28 04:46:02,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 331 transitions, 1905 flow [2024-11-28 04:46:02,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 331 transitions, 1830 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-11-28 04:46:02,223 INFO L231 Difference]: Finished difference. Result has 143 places, 200 transitions, 1257 flow [2024-11-28 04:46:02,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1257, PETRI_PLACES=143, PETRI_TRANSITIONS=200} [2024-11-28 04:46:02,226 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 94 predicate places. [2024-11-28 04:46:02,226 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 200 transitions, 1257 flow [2024-11-28 04:46:02,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.73076923076923) internal successors, (357), 26 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:02,228 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:02,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:02,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:02,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:02,429 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:46:02,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:02,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1331178092, now seen corresponding path program 1 times [2024-11-28 04:46:02,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:02,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074687441] [2024-11-28 04:46:02,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:02,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:46:03,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:03,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074687441] [2024-11-28 04:46:03,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074687441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:03,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401808600] [2024-11-28 04:46:03,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:03,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:03,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:03,215 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:03,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:46:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:03,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:46:03,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:03,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-28 04:46:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:46:03,470 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:46:03,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401808600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:03,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:46:03,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2024-11-28 04:46:03,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044608174] [2024-11-28 04:46:03,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:03,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:46:03,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:03,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:46:03,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:46:03,500 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-28 04:46:03,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 200 transitions, 1257 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:03,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:03,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-28 04:46:03,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:04,232 INFO L124 PetriNetUnfolderBase]: 1123/2425 cut-off events. [2024-11-28 04:46:04,232 INFO L125 PetriNetUnfolderBase]: For 6579/6620 co-relation queries the response was YES. [2024-11-28 04:46:04,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7669 conditions, 2425 events. 1123/2425 cut-off events. For 6579/6620 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 16212 event pairs, 194 based on Foata normal form. 58/2449 useless extension candidates. Maximal degree in co-relation 7625. Up to 756 conditions per place. [2024-11-28 04:46:04,267 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 220 selfloop transitions, 44 changer transitions 5/303 dead transitions. [2024-11-28 04:46:04,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 303 transitions, 2382 flow [2024-11-28 04:46:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:46:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:46:04,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-11-28 04:46:04,270 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-28 04:46:04,270 INFO L175 Difference]: Start difference. First operand has 143 places, 200 transitions, 1257 flow. Second operand 7 states and 180 transitions. [2024-11-28 04:46:04,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 303 transitions, 2382 flow [2024-11-28 04:46:04,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 303 transitions, 2149 flow, removed 105 selfloop flow, removed 3 redundant places. [2024-11-28 04:46:04,321 INFO L231 Difference]: Finished difference. Result has 149 places, 223 transitions, 1459 flow [2024-11-28 04:46:04,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1459, PETRI_PLACES=149, PETRI_TRANSITIONS=223} [2024-11-28 04:46:04,324 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 100 predicate places. [2024-11-28 04:46:04,324 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 223 transitions, 1459 flow [2024-11-28 04:46:04,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:04,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:04,325 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:04,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:04,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:04,528 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:46:04,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:04,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1114615428, now seen corresponding path program 1 times [2024-11-28 04:46:04,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:04,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603972874] [2024-11-28 04:46:04,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:04,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:46:05,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:05,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603972874] [2024-11-28 04:46:05,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603972874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:05,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924224188] [2024-11-28 04:46:05,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:05,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:05,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:05,197 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:05,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:46:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:05,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 04:46:05,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:05,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:46:05,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:46:05,497 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:46:05,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:46:05,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 04:46:05,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:46:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:05,797 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:06,790 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:46:06,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 42 [2024-11-28 04:46:06,807 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:46:06,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 54 [2024-11-28 04:46:06,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:46:06,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2024-11-28 04:46:07,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:07,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924224188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:07,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2024-11-28 04:46:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117974272] [2024-11-28 04:46:07,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:07,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 04:46:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:07,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 04:46:07,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=503, Unknown=1, NotChecked=0, Total=600 [2024-11-28 04:46:07,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 50 [2024-11-28 04:46:07,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 223 transitions, 1459 flow. Second operand has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:07,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:07,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 50 [2024-11-28 04:46:07,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:13,691 INFO L124 PetriNetUnfolderBase]: 5481/9955 cut-off events. [2024-11-28 04:46:13,691 INFO L125 PetriNetUnfolderBase]: For 26707/26827 co-relation queries the response was YES. [2024-11-28 04:46:13,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32367 conditions, 9955 events. 5481/9955 cut-off events. For 26707/26827 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 71087 event pairs, 675 based on Foata normal form. 350/9292 useless extension candidates. Maximal degree in co-relation 32320. Up to 3048 conditions per place. [2024-11-28 04:46:13,971 INFO L140 encePairwiseOnDemand]: 35/50 looper letters, 634 selfloop transitions, 328 changer transitions 33/1012 dead transitions. [2024-11-28 04:46:13,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 1012 transitions, 7694 flow [2024-11-28 04:46:13,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 04:46:13,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-11-28 04:46:13,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 685 transitions. [2024-11-28 04:46:13,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.30444444444444446 [2024-11-28 04:46:13,976 INFO L175 Difference]: Start difference. First operand has 149 places, 223 transitions, 1459 flow. Second operand 45 states and 685 transitions. [2024-11-28 04:46:13,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 1012 transitions, 7694 flow [2024-11-28 04:46:14,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 1012 transitions, 7690 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:46:14,136 INFO L231 Difference]: Finished difference. Result has 214 places, 526 transitions, 5052 flow [2024-11-28 04:46:14,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5052, PETRI_PLACES=214, PETRI_TRANSITIONS=526} [2024-11-28 04:46:14,138 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 165 predicate places. [2024-11-28 04:46:14,139 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 526 transitions, 5052 flow [2024-11-28 04:46:14,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.4) internal successors, (235), 25 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:14,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:14,140 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:14,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:46:14,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:46:14,344 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:46:14,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:14,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1681381222, now seen corresponding path program 1 times [2024-11-28 04:46:14,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:14,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107754626] [2024-11-28 04:46:14,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:14,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:16,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:16,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107754626] [2024-11-28 04:46:16,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107754626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612474433] [2024-11-28 04:46:16,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:16,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:16,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:16,091 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:16,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:46:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:16,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:46:16,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:16,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-11-28 04:46:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:46:16,544 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:16,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:46:16,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2024-11-28 04:46:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:46:16,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612474433] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:16,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:46:16,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12, 6] total 22 [2024-11-28 04:46:16,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594794275] [2024-11-28 04:46:16,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:16,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:46:16,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:16,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:46:16,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:46:16,854 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-28 04:46:16,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 526 transitions, 5052 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:16,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:16,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-28 04:46:16,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:18,753 INFO L124 PetriNetUnfolderBase]: 3133/6647 cut-off events. [2024-11-28 04:46:18,753 INFO L125 PetriNetUnfolderBase]: For 60455/60701 co-relation queries the response was YES. [2024-11-28 04:46:18,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31069 conditions, 6647 events. 3133/6647 cut-off events. For 60455/60701 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 53072 event pairs, 319 based on Foata normal form. 169/6723 useless extension candidates. Maximal degree in co-relation 30999. Up to 3559 conditions per place. [2024-11-28 04:46:18,826 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 479 selfloop transitions, 86 changer transitions 4/601 dead transitions. [2024-11-28 04:46:18,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 601 transitions, 7296 flow [2024-11-28 04:46:18,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:46:18,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:46:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-11-28 04:46:18,828 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-28 04:46:18,828 INFO L175 Difference]: Start difference. First operand has 214 places, 526 transitions, 5052 flow. Second operand 7 states and 180 transitions. [2024-11-28 04:46:18,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 601 transitions, 7296 flow [2024-11-28 04:46:19,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 601 transitions, 6893 flow, removed 183 selfloop flow, removed 7 redundant places. [2024-11-28 04:46:19,067 INFO L231 Difference]: Finished difference. Result has 209 places, 510 transitions, 4860 flow [2024-11-28 04:46:19,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4688, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4860, PETRI_PLACES=209, PETRI_TRANSITIONS=510} [2024-11-28 04:46:19,068 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 160 predicate places. [2024-11-28 04:46:19,068 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 510 transitions, 4860 flow [2024-11-28 04:46:19,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:19,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:19,069 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:19,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:46:19,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:46:19,273 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:46:19,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:19,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1335164693, now seen corresponding path program 1 times [2024-11-28 04:46:19,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:19,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134394709] [2024-11-28 04:46:19,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:19,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:46:19,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:19,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134394709] [2024-11-28 04:46:19,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134394709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:19,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388687077] [2024-11-28 04:46:19,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:19,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:19,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:19,458 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:19,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:46:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:19,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:46:19,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:46:19,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:46:19,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388687077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:19,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:19,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-28 04:46:19,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663666916] [2024-11-28 04:46:19,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:19,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:46:19,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:19,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:46:19,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:46:19,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:46:19,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 510 transitions, 4860 flow. Second operand has 15 states, 15 states have (on average 18.133333333333333) internal successors, (272), 15 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:19,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:19,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:46:19,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:21,220 INFO L124 PetriNetUnfolderBase]: 2395/5820 cut-off events. [2024-11-28 04:46:21,220 INFO L125 PetriNetUnfolderBase]: For 52305/52536 co-relation queries the response was YES. [2024-11-28 04:46:21,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26758 conditions, 5820 events. 2395/5820 cut-off events. For 52305/52536 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 49438 event pairs, 890 based on Foata normal form. 240/5972 useless extension candidates. Maximal degree in co-relation 26691. Up to 2462 conditions per place. [2024-11-28 04:46:21,289 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 355 selfloop transitions, 86 changer transitions 3/492 dead transitions. [2024-11-28 04:46:21,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 492 transitions, 5570 flow [2024-11-28 04:46:21,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:46:21,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:46:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-11-28 04:46:21,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-28 04:46:21,291 INFO L175 Difference]: Start difference. First operand has 209 places, 510 transitions, 4860 flow. Second operand 8 states and 175 transitions. [2024-11-28 04:46:21,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 492 transitions, 5570 flow [2024-11-28 04:46:21,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 492 transitions, 5436 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-11-28 04:46:21,533 INFO L231 Difference]: Finished difference. Result has 209 places, 443 transitions, 4276 flow [2024-11-28 04:46:21,533 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=4087, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4276, PETRI_PLACES=209, PETRI_TRANSITIONS=443} [2024-11-28 04:46:21,534 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 160 predicate places. [2024-11-28 04:46:21,535 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 443 transitions, 4276 flow [2024-11-28 04:46:21,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.133333333333333) internal successors, (272), 15 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:21,535 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:21,535 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:21,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:46:21,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:46:21,736 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:46:21,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:21,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2009102841, now seen corresponding path program 1 times [2024-11-28 04:46:21,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:21,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294647095] [2024-11-28 04:46:21,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:21,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:46:21,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:21,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294647095] [2024-11-28 04:46:21,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294647095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625595475] [2024-11-28 04:46:21,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:21,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:21,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:21,920 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:21,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:46:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:22,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:46:22,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:46:22,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:46:22,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625595475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:22,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:22,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-28 04:46:22,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208787336] [2024-11-28 04:46:22,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:22,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:46:22,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:22,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:46:22,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:46:22,326 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:46:22,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 443 transitions, 4276 flow. Second operand has 15 states, 15 states have (on average 18.266666666666666) internal successors, (274), 15 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:22,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:22,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:46:22,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:23,362 INFO L124 PetriNetUnfolderBase]: 1415/3609 cut-off events. [2024-11-28 04:46:23,362 INFO L125 PetriNetUnfolderBase]: For 32497/32637 co-relation queries the response was YES. [2024-11-28 04:46:23,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15973 conditions, 3609 events. 1415/3609 cut-off events. For 32497/32637 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 28624 event pairs, 578 based on Foata normal form. 170/3685 useless extension candidates. Maximal degree in co-relation 15909. Up to 1500 conditions per place. [2024-11-28 04:46:23,396 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 228 selfloop transitions, 95 changer transitions 23/390 dead transitions. [2024-11-28 04:46:23,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 390 transitions, 4403 flow [2024-11-28 04:46:23,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:46:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 04:46:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 282 transitions. [2024-11-28 04:46:23,398 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40285714285714286 [2024-11-28 04:46:23,398 INFO L175 Difference]: Start difference. First operand has 209 places, 443 transitions, 4276 flow. Second operand 14 states and 282 transitions. [2024-11-28 04:46:23,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 390 transitions, 4403 flow [2024-11-28 04:46:23,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 390 transitions, 4306 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-11-28 04:46:23,524 INFO L231 Difference]: Finished difference. Result has 209 places, 340 transitions, 3419 flow [2024-11-28 04:46:23,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3187, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3419, PETRI_PLACES=209, PETRI_TRANSITIONS=340} [2024-11-28 04:46:23,525 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 160 predicate places. [2024-11-28 04:46:23,525 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 340 transitions, 3419 flow [2024-11-28 04:46:23,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.266666666666666) internal successors, (274), 15 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:23,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:23,526 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:23,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:46:23,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:46:23,727 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:46:23,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:23,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1630798461, now seen corresponding path program 2 times [2024-11-28 04:46:23,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:23,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522561851] [2024-11-28 04:46:23,728 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:23,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:23,762 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:46:23,763 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:23,878 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:46:23,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:23,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522561851] [2024-11-28 04:46:23,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522561851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:23,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:23,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:46:23,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997376900] [2024-11-28 04:46:23,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:23,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:46:23,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:23,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:46:23,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:46:23,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 50 [2024-11-28 04:46:23,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 340 transitions, 3419 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:23,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:23,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 50 [2024-11-28 04:46:23,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:24,895 INFO L124 PetriNetUnfolderBase]: 1569/3586 cut-off events. [2024-11-28 04:46:24,896 INFO L125 PetriNetUnfolderBase]: For 28333/28429 co-relation queries the response was YES. [2024-11-28 04:46:24,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15500 conditions, 3586 events. 1569/3586 cut-off events. For 28333/28429 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 26310 event pairs, 211 based on Foata normal form. 122/3649 useless extension candidates. Maximal degree in co-relation 15436. Up to 1801 conditions per place. [2024-11-28 04:46:24,971 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 282 selfloop transitions, 62 changer transitions 5/380 dead transitions. [2024-11-28 04:46:24,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 380 transitions, 4489 flow [2024-11-28 04:46:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:46:24,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:46:24,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-11-28 04:46:24,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-11-28 04:46:24,974 INFO L175 Difference]: Start difference. First operand has 209 places, 340 transitions, 3419 flow. Second operand 6 states and 153 transitions. [2024-11-28 04:46:24,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 380 transitions, 4489 flow [2024-11-28 04:46:25,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 380 transitions, 4270 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-11-28 04:46:25,094 INFO L231 Difference]: Finished difference. Result has 204 places, 339 transitions, 3324 flow [2024-11-28 04:46:25,097 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=3200, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3324, PETRI_PLACES=204, PETRI_TRANSITIONS=339} [2024-11-28 04:46:25,098 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 155 predicate places. [2024-11-28 04:46:25,098 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 339 transitions, 3324 flow [2024-11-28 04:46:25,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:25,098 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:25,098 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:25,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 04:46:25,098 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:46:25,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:25,099 INFO L85 PathProgramCache]: Analyzing trace with hash 911248698, now seen corresponding path program 2 times [2024-11-28 04:46:25,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:25,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019547628] [2024-11-28 04:46:25,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:25,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:25,136 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:46:25,136 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:46:25,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:25,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019547628] [2024-11-28 04:46:25,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019547628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:25,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:25,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:46:25,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924579606] [2024-11-28 04:46:25,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:25,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:46:25,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:25,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:46:25,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:46:25,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-28 04:46:25,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 339 transitions, 3324 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:25,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:25,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-28 04:46:25,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:26,212 INFO L124 PetriNetUnfolderBase]: 1281/3232 cut-off events. [2024-11-28 04:46:26,212 INFO L125 PetriNetUnfolderBase]: For 24408/24520 co-relation queries the response was YES. [2024-11-28 04:46:26,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13689 conditions, 3232 events. 1281/3232 cut-off events. For 24408/24520 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24077 event pairs, 377 based on Foata normal form. 78/3218 useless extension candidates. Maximal degree in co-relation 13628. Up to 1030 conditions per place. [2024-11-28 04:46:26,273 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 277 selfloop transitions, 26 changer transitions 34/368 dead transitions. [2024-11-28 04:46:26,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 368 transitions, 4240 flow [2024-11-28 04:46:26,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:46:26,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:46:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-28 04:46:26,274 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-11-28 04:46:26,275 INFO L175 Difference]: Start difference. First operand has 204 places, 339 transitions, 3324 flow. Second operand 4 states and 122 transitions. [2024-11-28 04:46:26,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 368 transitions, 4240 flow [2024-11-28 04:46:26,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 368 transitions, 4103 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-11-28 04:46:26,367 INFO L231 Difference]: Finished difference. Result has 190 places, 282 transitions, 2751 flow [2024-11-28 04:46:26,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2751, PETRI_PLACES=190, PETRI_TRANSITIONS=282} [2024-11-28 04:46:26,368 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 141 predicate places. [2024-11-28 04:46:26,368 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 282 transitions, 2751 flow [2024-11-28 04:46:26,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:26,368 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:26,368 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:26,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:46:26,369 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:46:26,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:26,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1588295841, now seen corresponding path program 2 times [2024-11-28 04:46:26,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:26,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47102394] [2024-11-28 04:46:26,370 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:26,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:26,403 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:46:26,403 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:46:26,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:26,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47102394] [2024-11-28 04:46:26,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47102394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:26,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:26,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:46:26,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896519952] [2024-11-28 04:46:26,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:26,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:46:26,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:26,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:46:26,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:46:26,501 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-11-28 04:46:26,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 282 transitions, 2751 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:26,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:26,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-11-28 04:46:26,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:27,139 INFO L124 PetriNetUnfolderBase]: 1117/2887 cut-off events. [2024-11-28 04:46:27,139 INFO L125 PetriNetUnfolderBase]: For 23932/24112 co-relation queries the response was YES. [2024-11-28 04:46:27,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12496 conditions, 2887 events. 1117/2887 cut-off events. For 23932/24112 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 21320 event pairs, 345 based on Foata normal form. 82/2903 useless extension candidates. Maximal degree in co-relation 12437. Up to 980 conditions per place. [2024-11-28 04:46:27,160 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 234 selfloop transitions, 15 changer transitions 29/301 dead transitions. [2024-11-28 04:46:27,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 301 transitions, 3548 flow [2024-11-28 04:46:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:46:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:46:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-28 04:46:27,161 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-28 04:46:27,161 INFO L175 Difference]: Start difference. First operand has 190 places, 282 transitions, 2751 flow. Second operand 4 states and 120 transitions. [2024-11-28 04:46:27,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 301 transitions, 3548 flow [2024-11-28 04:46:27,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 301 transitions, 3395 flow, removed 72 selfloop flow, removed 11 redundant places. [2024-11-28 04:46:27,201 INFO L231 Difference]: Finished difference. Result has 162 places, 213 transitions, 2157 flow [2024-11-28 04:46:27,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2157, PETRI_PLACES=162, PETRI_TRANSITIONS=213} [2024-11-28 04:46:27,201 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 113 predicate places. [2024-11-28 04:46:27,201 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 213 transitions, 2157 flow [2024-11-28 04:46:27,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:27,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:27,202 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1] [2024-11-28 04:46:27,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:46:27,202 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:46:27,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:27,203 INFO L85 PathProgramCache]: Analyzing trace with hash -872220357, now seen corresponding path program 2 times [2024-11-28 04:46:27,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:27,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910270014] [2024-11-28 04:46:27,203 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:27,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:27,219 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:46:27,220 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 04:46:27,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:27,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910270014] [2024-11-28 04:46:27,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910270014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719288659] [2024-11-28 04:46:27,262 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:27,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:27,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:27,264 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:27,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:46:27,363 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:46:27,364 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:27,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:46:27,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:27,431 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 04:46:27,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-28 04:46:27,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719288659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:27,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:27,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 04:46:27,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366878683] [2024-11-28 04:46:27,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:27,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:46:27,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:27,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:46:27,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:46:27,514 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:46:27,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 213 transitions, 2157 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:27,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:27,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:46:27,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:28,052 INFO L124 PetriNetUnfolderBase]: 974/2551 cut-off events. [2024-11-28 04:46:28,053 INFO L125 PetriNetUnfolderBase]: For 13349/13493 co-relation queries the response was YES. [2024-11-28 04:46:28,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10221 conditions, 2551 events. 974/2551 cut-off events. For 13349/13493 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 18918 event pairs, 502 based on Foata normal form. 9/2526 useless extension candidates. Maximal degree in co-relation 10169. Up to 1587 conditions per place. [2024-11-28 04:46:28,081 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 84 selfloop transitions, 60 changer transitions 46/212 dead transitions. [2024-11-28 04:46:28,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 212 transitions, 2515 flow [2024-11-28 04:46:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:46:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:46:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-11-28 04:46:28,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.404 [2024-11-28 04:46:28,082 INFO L175 Difference]: Start difference. First operand has 162 places, 213 transitions, 2157 flow. Second operand 5 states and 101 transitions. [2024-11-28 04:46:28,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 212 transitions, 2515 flow [2024-11-28 04:46:28,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 212 transitions, 2361 flow, removed 34 selfloop flow, removed 16 redundant places. [2024-11-28 04:46:28,111 INFO L231 Difference]: Finished difference. Result has 139 places, 166 transitions, 1650 flow [2024-11-28 04:46:28,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1650, PETRI_PLACES=139, PETRI_TRANSITIONS=166} [2024-11-28 04:46:28,112 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 90 predicate places. [2024-11-28 04:46:28,112 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 166 transitions, 1650 flow [2024-11-28 04:46:28,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:28,113 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:28,113 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:28,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:46:28,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 04:46:28,314 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:46:28,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash -419450473, now seen corresponding path program 1 times [2024-11-28 04:46:28,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:28,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382015275] [2024-11-28 04:46:28,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:28,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:29,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:29,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382015275] [2024-11-28 04:46:29,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382015275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:29,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545657559] [2024-11-28 04:46:29,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:29,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:29,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:29,284 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:29,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:46:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:29,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:46:29,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:29,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:46:30,347 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:46:30,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-28 04:46:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:46:30,357 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:30,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-28 04:46:31,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2024-11-28 04:46:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:46:31,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545657559] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:31,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:31,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 37 [2024-11-28 04:46:31,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73071648] [2024-11-28 04:46:31,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:31,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 04:46:31,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:31,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 04:46:31,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1346, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:46:31,983 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-28 04:46:31,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 166 transitions, 1650 flow. Second operand has 39 states, 39 states have (on average 13.923076923076923) internal successors, (543), 39 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:31,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:31,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-28 04:46:31,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:36,254 INFO L124 PetriNetUnfolderBase]: 3313/7268 cut-off events. [2024-11-28 04:46:36,254 INFO L125 PetriNetUnfolderBase]: For 23925/24327 co-relation queries the response was YES. [2024-11-28 04:46:36,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26600 conditions, 7268 events. 3313/7268 cut-off events. For 23925/24327 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 58905 event pairs, 366 based on Foata normal form. 300/7489 useless extension candidates. Maximal degree in co-relation 26562. Up to 1154 conditions per place. [2024-11-28 04:46:36,303 INFO L140 encePairwiseOnDemand]: 36/50 looper letters, 306 selfloop transitions, 171 changer transitions 24/512 dead transitions. [2024-11-28 04:46:36,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 512 transitions, 5414 flow [2024-11-28 04:46:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 04:46:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-28 04:46:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 739 transitions. [2024-11-28 04:46:36,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3519047619047619 [2024-11-28 04:46:36,307 INFO L175 Difference]: Start difference. First operand has 139 places, 166 transitions, 1650 flow. Second operand 42 states and 739 transitions. [2024-11-28 04:46:36,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 512 transitions, 5414 flow [2024-11-28 04:46:36,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 512 transitions, 5167 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-11-28 04:46:36,354 INFO L231 Difference]: Finished difference. Result has 170 places, 262 transitions, 2687 flow [2024-11-28 04:46:36,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2687, PETRI_PLACES=170, PETRI_TRANSITIONS=262} [2024-11-28 04:46:36,355 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 121 predicate places. [2024-11-28 04:46:36,355 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 262 transitions, 2687 flow [2024-11-28 04:46:36,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 13.923076923076923) internal successors, (543), 39 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:36,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:36,356 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:36,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:36,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:46:36,559 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:46:36,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash 745243205, now seen corresponding path program 1 times [2024-11-28 04:46:36,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:36,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246577540] [2024-11-28 04:46:36,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:36,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:36,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:46:37,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:37,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246577540] [2024-11-28 04:46:37,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246577540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:37,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713602589] [2024-11-28 04:46:37,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:37,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:37,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:37,438 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:37,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:46:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:37,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:46:37,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:37,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-28 04:46:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:46:37,861 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:37,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:46:37,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-28 04:46:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:46:38,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713602589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:38,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:38,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 7] total 25 [2024-11-28 04:46:38,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705855525] [2024-11-28 04:46:38,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:38,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:46:38,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:38,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:46:38,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:46:38,484 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 50 [2024-11-28 04:46:38,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 262 transitions, 2687 flow. Second operand has 27 states, 27 states have (on average 10.222222222222221) internal successors, (276), 27 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:38,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:38,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 50 [2024-11-28 04:46:38,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:45,677 INFO L124 PetriNetUnfolderBase]: 16246/29542 cut-off events. [2024-11-28 04:46:45,677 INFO L125 PetriNetUnfolderBase]: For 113163/113163 co-relation queries the response was YES. [2024-11-28 04:46:45,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122105 conditions, 29542 events. 16246/29542 cut-off events. For 113163/113163 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 237763 event pairs, 1112 based on Foata normal form. 682/30200 useless extension candidates. Maximal degree in co-relation 122062. Up to 5584 conditions per place. [2024-11-28 04:46:45,881 INFO L140 encePairwiseOnDemand]: 33/50 looper letters, 1571 selfloop transitions, 513 changer transitions 3/2093 dead transitions. [2024-11-28 04:46:45,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 2093 transitions, 23741 flow [2024-11-28 04:46:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-28 04:46:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-11-28 04:46:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 1306 transitions. [2024-11-28 04:46:45,885 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3306329113924051 [2024-11-28 04:46:45,885 INFO L175 Difference]: Start difference. First operand has 170 places, 262 transitions, 2687 flow. Second operand 79 states and 1306 transitions. [2024-11-28 04:46:45,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 2093 transitions, 23741 flow [2024-11-28 04:46:46,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 2093 transitions, 22593 flow, removed 139 selfloop flow, removed 13 redundant places. [2024-11-28 04:46:46,477 INFO L231 Difference]: Finished difference. Result has 293 places, 721 transitions, 9039 flow [2024-11-28 04:46:46,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2450, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=9039, PETRI_PLACES=293, PETRI_TRANSITIONS=721} [2024-11-28 04:46:46,478 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 244 predicate places. [2024-11-28 04:46:46,478 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 721 transitions, 9039 flow [2024-11-28 04:46:46,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.222222222222221) internal successors, (276), 27 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:46,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:46,478 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:46,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:46,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:46:46,679 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:46:46,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:46,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1177207873, now seen corresponding path program 2 times [2024-11-28 04:46:46,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:46,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458096860] [2024-11-28 04:46:46,680 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:46,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:46,714 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:46:46,714 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:46:47,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:47,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458096860] [2024-11-28 04:46:47,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458096860] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:47,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086329962] [2024-11-28 04:46:47,613 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:47,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:47,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:47,616 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:47,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:46:47,747 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:46:47,747 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:47,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 04:46:47,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:47,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:46:48,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:46:48,214 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:46:48,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:46:48,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 04:46:48,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 04:46:51,782 INFO L349 Elim1Store]: treesize reduction 73, result has 24.7 percent of original size [2024-11-28 04:46:51,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 35 [2024-11-28 04:46:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:46:51,937 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:56,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:46:56,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 68 [2024-11-28 04:46:56,112 INFO L349 Elim1Store]: treesize reduction 4, result has 95.5 percent of original size [2024-11-28 04:46:56,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 157 treesize of output 200 [2024-11-28 04:46:56,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:46:56,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 145 [2024-11-28 04:47:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:47:03,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086329962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:47:03,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:47:03,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21, 21] total 59 [2024-11-28 04:47:03,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201544065] [2024-11-28 04:47:03,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:47:03,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-28 04:47:03,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:03,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-28 04:47:03,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=3273, Unknown=3, NotChecked=0, Total=3660 [2024-11-28 04:47:04,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 50 [2024-11-28 04:47:04,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 721 transitions, 9039 flow. Second operand has 61 states, 61 states have (on average 5.770491803278689) internal successors, (352), 61 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:04,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:47:04,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 50 [2024-11-28 04:47:04,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:47:24,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:28,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:35,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:47:39,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:47:43,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:52,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:48:04,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:48:08,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:48:22,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 04:49:04,227 INFO L124 PetriNetUnfolderBase]: 25964/45131 cut-off events. [2024-11-28 04:49:04,227 INFO L125 PetriNetUnfolderBase]: For 857963/857963 co-relation queries the response was YES. [2024-11-28 04:49:04,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288789 conditions, 45131 events. 25964/45131 cut-off events. For 857963/857963 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 362507 event pairs, 4000 based on Foata normal form. 564/41471 useless extension candidates. Maximal degree in co-relation 288690. Up to 15477 conditions per place. [2024-11-28 04:49:04,808 INFO L140 encePairwiseOnDemand]: 31/50 looper letters, 1451 selfloop transitions, 908 changer transitions 166/2527 dead transitions. [2024-11-28 04:49:04,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 2527 transitions, 34515 flow [2024-11-28 04:49:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2024-11-28 04:49:04,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2024-11-28 04:49:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 1782 transitions. [2024-11-28 04:49:04,815 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.1895744680851064 [2024-11-28 04:49:04,815 INFO L175 Difference]: Start difference. First operand has 293 places, 721 transitions, 9039 flow. Second operand 188 states and 1782 transitions. [2024-11-28 04:49:04,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 2527 transitions, 34515 flow [2024-11-28 04:49:13,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 2527 transitions, 31193 flow, removed 1033 selfloop flow, removed 10 redundant places. [2024-11-28 04:49:13,436 INFO L231 Difference]: Finished difference. Result has 530 places, 1393 transitions, 19386 flow [2024-11-28 04:49:13,437 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=8021, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=188, PETRI_FLOW=19386, PETRI_PLACES=530, PETRI_TRANSITIONS=1393} [2024-11-28 04:49:13,438 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 481 predicate places. [2024-11-28 04:49:13,438 INFO L471 AbstractCegarLoop]: Abstraction has has 530 places, 1393 transitions, 19386 flow [2024-11-28 04:49:13,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.770491803278689) internal successors, (352), 61 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:13,438 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:49:13,438 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:13,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:49:13,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:49:13,639 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:49:13,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1595692711, now seen corresponding path program 3 times [2024-11-28 04:49:13,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:13,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943122168] [2024-11-28 04:49:13,640 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:49:13,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:13,692 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:49:13,692 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:49:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:49:13,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:13,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943122168] [2024-11-28 04:49:13,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943122168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:13,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473149110] [2024-11-28 04:49:13,953 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:49:13,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:13,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:13,955 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:13,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:49:14,115 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 04:49:14,115 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:49:14,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:49:14,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:14,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-28 04:49:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:49:14,382 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:14,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:49:14,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2024-11-28 04:49:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:49:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473149110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:14,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:14,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-28 04:49:14,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008253153] [2024-11-28 04:49:14,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:14,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:49:14,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:14,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:49:14,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:49:14,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-11-28 04:49:14,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 1393 transitions, 19386 flow. Second operand has 16 states, 16 states have (on average 14.3125) internal successors, (229), 16 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:14,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:49:14,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-11-28 04:49:14,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:49:39,409 INFO L124 PetriNetUnfolderBase]: 28508/51885 cut-off events. [2024-11-28 04:49:39,409 INFO L125 PetriNetUnfolderBase]: For 1568183/1568183 co-relation queries the response was YES. [2024-11-28 04:49:40,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369465 conditions, 51885 events. 28508/51885 cut-off events. For 1568183/1568183 co-relation queries the response was YES. Maximal size of possible extension queue 1248. Compared 450856 event pairs, 1935 based on Foata normal form. 812/52469 useless extension candidates. Maximal degree in co-relation 369308. Up to 9917 conditions per place. [2024-11-28 04:49:40,625 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 1256 selfloop transitions, 1415 changer transitions 4/2681 dead transitions. [2024-11-28 04:49:40,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 2681 transitions, 43907 flow [2024-11-28 04:49:40,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-28 04:49:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-11-28 04:49:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 940 transitions. [2024-11-28 04:49:40,629 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40869565217391307 [2024-11-28 04:49:40,629 INFO L175 Difference]: Start difference. First operand has 530 places, 1393 transitions, 19386 flow. Second operand 46 states and 940 transitions. [2024-11-28 04:49:40,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 2681 transitions, 43907 flow [2024-11-28 04:49:59,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 2681 transitions, 40447 flow, removed 1307 selfloop flow, removed 26 redundant places. [2024-11-28 04:49:59,375 INFO L231 Difference]: Finished difference. Result has 583 places, 1933 transitions, 30882 flow [2024-11-28 04:49:59,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=16982, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=903, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=30882, PETRI_PLACES=583, PETRI_TRANSITIONS=1933} [2024-11-28 04:49:59,376 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 534 predicate places. [2024-11-28 04:49:59,377 INFO L471 AbstractCegarLoop]: Abstraction has has 583 places, 1933 transitions, 30882 flow [2024-11-28 04:49:59,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.3125) internal successors, (229), 16 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:49:59,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:49:59,377 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:59,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:49:59,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 04:49:59,578 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2024-11-28 04:49:59,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:59,578 INFO L85 PathProgramCache]: Analyzing trace with hash 610073793, now seen corresponding path program 4 times [2024-11-28 04:49:59,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:59,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759344500] [2024-11-28 04:49:59,578 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:49:59,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:59,627 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:49:59,627 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:50:00,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759344500] [2024-11-28 04:50:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759344500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775774092] [2024-11-28 04:50:00,651 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:50:00,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:00,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:00,653 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:00,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6533a0f-3118-4dba-8ad8-c2b0debcc37b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:50:00,764 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:50:00,764 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:00,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:50:00,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:00,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:50:00,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 04:50:01,097 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:50:01,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 04:50:01,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-28 04:50:01,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-11-28 04:50:01,656 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:50:01,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-28 04:50:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:50:01,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:50:02,422 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:50:02,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-28 04:50:02,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:50:02,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 42 [2024-11-28 04:50:02,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 9 [2024-11-28 04:50:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:50:02,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775774092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:50:02,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:50:02,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-11-28 04:50:02,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591283281] [2024-11-28 04:50:02,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:50:02,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-28 04:50:02,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:50:02,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-28 04:50:02,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1208, Unknown=2, NotChecked=0, Total=1332 [2024-11-28 04:50:03,276 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 50 [2024-11-28 04:50:03,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 1933 transitions, 30882 flow. Second operand has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:03,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:50:03,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 50 [2024-11-28 04:50:03,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand